| File: | platform/mac/avmshell/../../../core/ByteArrayGlue.cpp |
| Location: | line 377, column 9 |
| Description: | Value stored to 'error' is never read |
| 1 | /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */ |
| 2 | /* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */ |
| 3 | /* ***** BEGIN LICENSE BLOCK ***** |
| 4 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| 5 | * |
| 6 | * The contents of this file are subject to the Mozilla Public License Version |
| 7 | * 1.1 (the "License"); you may not use this file except in compliance with |
| 8 | * the License. You may obtain a copy of the License at |
| 9 | * http://www.mozilla.org/MPL/ |
| 10 | * |
| 11 | * Software distributed under the License is distributed on an "AS IS" basis, |
| 12 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| 13 | * for the specific language governing rights and limitations under the |
| 14 | * License. |
| 15 | * |
| 16 | * The Original Code is [Open Source Virtual Machine.]. |
| 17 | * |
| 18 | * The Initial Developer of the Original Code is |
| 19 | * Adobe System Incorporated. |
| 20 | * Portions created by the Initial Developer are Copyright (C) 2004-2006 |
| 21 | * the Initial Developer. All Rights Reserved. |
| 22 | * |
| 23 | * Contributor(s): |
| 24 | * Adobe AS3 Team |
| 25 | * |
| 26 | * Alternatively, the contents of this file may be used under the terms of |
| 27 | * either the GNU General Public License Version 2 or later (the "GPL"), or |
| 28 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| 29 | * in which case the provisions of the GPL or the LGPL are applicable instead |
| 30 | * of those above. If you wish to allow use of your version of this file only |
| 31 | * under the terms of either the GPL or the LGPL, and not to allow others to |
| 32 | * use your version of this file under the terms of the MPL, indicate your |
| 33 | * decision by deleting the provisions above and replace them with the notice |
| 34 | * and other provisions required by the GPL or the LGPL. If you do not delete |
| 35 | * the provisions above, a recipient may use your version of this file under |
| 36 | * the terms of any one of the MPL, the GPL or the LGPL. |
| 37 | * |
| 38 | * ***** END LICENSE BLOCK ***** */ |
| 39 | |
| 40 | |
| 41 | #include "avmplus.h" |
| 42 | #include "zlib.h" |
| 43 | |
| 44 | namespace avmplus |
| 45 | { |
| 46 | // |
| 47 | // ByteArray |
| 48 | // |
| 49 | |
| 50 | ByteArray::ByteArray(Toplevel* toplevel) |
| 51 | : DataIOBase() |
| 52 | , DataInput() |
| 53 | , DataOutput() |
| 54 | , m_toplevel(toplevel) |
| 55 | , m_gc(toplevel->core()->GetGC()) |
| 56 | , m_subscribers(m_gc, 0) |
| 57 | , m_copyOnWriteOwner(NULL__null) |
| 58 | , m_array(NULL__null) |
| 59 | , m_capacity(0) |
| 60 | , m_length(0) |
| 61 | , m_position(0) |
| 62 | { |
| 63 | AvmAssert(m_gc != NULL)do { } while (0); |
| 64 | } |
| 65 | |
| 66 | ByteArray::~ByteArray() |
| 67 | { |
| 68 | // no: this can reallocate memory, which is bad to do in a dtor |
| 69 | // m_subscribers.clear(); |
| 70 | _Clear(); |
| 71 | } |
| 72 | |
| 73 | void ByteArray::Clear() |
| 74 | { |
| 75 | if (m_subscribers.length() > 0) |
| 76 | { |
| 77 | AvmAssert(false)do { } while (0); // shouldn't get here? |
| 78 | m_toplevel->throwRangeError(kInvalidRangeError); |
| 79 | } |
| 80 | _Clear(); |
| 81 | } |
| 82 | |
| 83 | void ByteArray::_Clear() |
| 84 | { |
| 85 | if (m_array && !IsCopyOnWrite()) |
| 86 | { |
| 87 | TellGcDeleteBufferMemory(m_array, m_length); |
| 88 | mmfx_delete_array(m_array)::MMgcDestructTaggedArrayChecked(m_array); |
| 89 | } |
| 90 | m_array = NULL__null; |
| 91 | m_capacity = 0; |
| 92 | m_length = 0; |
| 93 | m_copyOnWriteOwner = NULL__null; |
| 94 | } |
| 95 | |
| 96 | void ByteArray::SetCopyOnWriteOwner(MMgc::GCObject* owner) |
| 97 | { |
| 98 | if (owner != NULL__null && m_gc->IsPointerToGCPage(this)) |
| 99 | { |
| 100 | WB(m_gc, m_gc->FindBeginningFast(this), &m_copyOnWriteOwner, owner)m_gc->privateWriteBarrier(m_gc->FindBeginningFast(this) , &m_copyOnWriteOwner, (const void *) (owner)); |
| 101 | } |
| 102 | else |
| 103 | { |
| 104 | m_copyOnWriteOwner = owner; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | void ByteArray::SetCopyOnWriteData(MMgc::GCObject* owner, const uint8_t* data, uint32_t length) |
| 109 | { |
| 110 | Clear(); |
| 111 | m_array = const_cast<uint8_t*>(data); |
| 112 | m_capacity = length; |
| 113 | m_length = length; |
| 114 | // we must have a non-null value for m_copyOnWriteOwner, as we |
| 115 | // use it as an implicit boolean as well, so if none is provided, |
| 116 | // cheat and use m_gc->emptyWeakRef |
| 117 | if (owner == NULL__null) |
| 118 | owner = (MMgc::GCObject*)m_gc->emptyWeakRef; |
| 119 | SetCopyOnWriteOwner(owner); |
| 120 | } |
| 121 | |
| 122 | void FASTCALL__attribute__((fastcall)) ByteArray::Grower::EnsureWritableCapacity(uint32_t minimumCapacity) |
| 123 | { |
| 124 | if (minimumCapacity > (MMgc::GCHeap::kMaxObjectSize - MMgc::GCHeap::kBlockSize*2)) |
| 125 | m_owner->ThrowMemoryError(); |
| 126 | |
| 127 | if (minimumCapacity > m_owner->m_capacity || m_owner->IsCopyOnWrite()) |
| 128 | { |
| 129 | uint32_t newCapacity = m_owner->m_capacity << 1; |
| 130 | if (newCapacity < minimumCapacity) |
| 131 | newCapacity = uint32_t(minimumCapacity); |
| 132 | if (newCapacity < kGrowthIncr) |
| 133 | newCapacity = kGrowthIncr; |
| 134 | |
| 135 | m_oldArray = m_owner->m_array; |
| 136 | m_oldLength = m_owner->m_length; |
| 137 | |
| 138 | uint8_t* newArray = mmfx_new_array_opt(uint8_t, newCapacity, MMgc::kCanFailAndZero)::MMgcConstructTaggedArray((uint8_t*)__null, newCapacity, MMgc ::kCanFailAndZero); |
| 139 | if (!newArray) |
| 140 | m_owner->ThrowMemoryError(); |
| 141 | |
| 142 | m_owner->TellGcNewBufferMemory(newArray, newCapacity); |
| 143 | if (m_oldArray) |
| 144 | VMPI_memcpy::memcpy(newArray, m_oldArray, m_oldLength); |
| 145 | |
| 146 | m_owner->m_array = newArray; |
| 147 | m_owner->m_capacity = newCapacity; |
| 148 | if (m_owner->m_copyOnWriteOwner != NULL__null) |
| 149 | { |
| 150 | m_owner->m_copyOnWriteOwner = NULL__null; |
| 151 | // Set this to NULL so we don't attempt to delete it in our dtor. |
| 152 | m_oldArray = NULL__null; |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | Why the "Grower" class? |
| 159 | |
| 160 | (1) It provides a clean way to defer discarding the old buffer until the |
| 161 | end of the calling function; this matters in the case of Write(), |
| 162 | as it's legal to call Write() on your own buffer, and so if growth |
| 163 | occurs, you must not discard the old buffer until copying takes place. |
| 164 | (2) It avoid redundant calls to NotifySubscribers(); previously we'd call |
| 165 | once when a reallocation occurred, then again when the length field |
| 166 | changed. |
| 167 | (3) It streamlines copy-on-write handling; formerly we either did |
| 168 | redundant CopyOnWrite alloc-and-copy followed by a Grow alloc-and-copy, |
| 169 | or an if-else clause with redundant alloc-and-copy. |
| 170 | |
| 171 | Of course, the dtor will be skipped (and thus notify and deletes skipped) |
| 172 | if a longjmp over it, but the old code was subject to the same defects, |
| 173 | so this is not a new liability. |
| 174 | */ |
| 175 | ByteArray::Grower::~Grower() |
| 176 | { |
| 177 | if (m_oldArray != m_owner->m_array || m_oldLength != m_owner->m_length) |
| 178 | { |
| 179 | m_owner->NotifySubscribers(); |
| 180 | } |
| 181 | // m_oldArray could be NULL if we grew a copy-on-write ByteArray. |
| 182 | if (m_oldArray != NULL__null && m_oldArray != m_owner->m_array) |
| 183 | { |
| 184 | m_owner->TellGcDeleteBufferMemory(m_oldArray, m_oldLength); |
| 185 | mmfx_delete_array(m_oldArray)::MMgcDestructTaggedArrayChecked(m_oldArray); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | uint8_t* FASTCALL__attribute__((fastcall)) ByteArray::GetWritableBuffer() |
| 190 | { |
| 191 | Grower grower(this); |
| 192 | grower.EnsureWritableCapacity(m_capacity); |
| 193 | return m_array; |
| 194 | } |
| 195 | |
| 196 | uint8_t& ByteArray::operator[](uint32_t index) |
| 197 | { |
| 198 | if (index >= m_length) |
| 199 | SetLength(index + 1); |
| 200 | return m_array[index]; |
| 201 | } |
| 202 | |
| 203 | void FASTCALL__attribute__((fastcall)) ByteArray::SetLength(uint32_t newLength) |
| 204 | { |
| 205 | if (m_subscribers.length() > 0 && m_length < DomainEnv::GLOBAL_MEMORY_MIN_SIZE) |
| 206 | m_toplevel->throwRangeError(kInvalidRangeError); |
| 207 | |
| 208 | Grower grower(this); |
| 209 | if (newLength > m_capacity) |
| 210 | { |
| 211 | grower.EnsureWritableCapacity(newLength); |
| 212 | } |
| 213 | m_length = newLength; |
| 214 | if (m_position > newLength) |
| 215 | m_position = newLength; |
| 216 | } |
| 217 | |
| 218 | // When we might be reading or writing to ourself, use this function |
| 219 | // apparently SunPro compiler doesn't like combining REALLY_INLINE with static functions in CPP files |
| 220 | /*static*/ |
| 221 | REALLY_INLINEinline __attribute__((always_inline)) void move_or_copy(void* dst, const void* src, uint32_t count) |
| 222 | { |
| 223 | if ((uintptr_t(dst) - uintptr_t(src)) >= uintptr_t(count)) |
| 224 | { |
| 225 | VMPI_memcpy::memcpy(dst, src, count); |
| 226 | } |
| 227 | else |
| 228 | { |
| 229 | VMPI_memmove::memmove(dst, src, count); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | void ByteArray::Read(void* buffer, uint32_t count) |
| 234 | { |
| 235 | CheckEOF(count); |
| 236 | move_or_copy(buffer, m_array + m_position, count); |
| 237 | m_position += count; |
| 238 | } |
| 239 | |
| 240 | void ByteArray::Write(const void* buffer, uint32_t count) |
| 241 | { |
| 242 | uint32_t writeEnd = m_position + count; |
| 243 | |
| 244 | Grower grower(this); |
| 245 | grower.EnsureWritableCapacity(writeEnd); |
| 246 | |
| 247 | move_or_copy(m_array + m_position, buffer, count); |
| 248 | m_position += count; |
| 249 | if (m_length < m_position) |
| 250 | m_length = m_position; |
| 251 | } |
| 252 | |
| 253 | void ByteArray::EnsureCapacity(uint32_t capacity) |
| 254 | { |
| 255 | Grower grower(this); |
| 256 | grower.EnsureWritableCapacity(capacity); |
| 257 | } |
| 258 | |
| 259 | void ByteArray::NotifySubscribers() |
| 260 | { |
| 261 | for (uint32_t i = 0, n = m_subscribers.length(); i < n; ++i) |
| 262 | { |
| 263 | AvmAssert(m_length >= DomainEnv::GLOBAL_MEMORY_MIN_SIZE)do { } while (0); |
| 264 | |
| 265 | DomainEnv* subscriber = m_subscribers.get(i); |
| 266 | if (subscriber) |
| 267 | { |
| 268 | subscriber->notifyGlobalMemoryChanged(m_array, m_length); |
| 269 | } |
| 270 | else |
| 271 | { |
| 272 | // Domain went away? remove link |
| 273 | m_subscribers.removeAt(i); |
| 274 | --i; |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | boolbool ByteArray::addSubscriber(DomainEnv* subscriber) |
| 280 | { |
| 281 | if (m_length >= DomainEnv::GLOBAL_MEMORY_MIN_SIZE) |
| 282 | { |
| 283 | removeSubscriber(subscriber); |
| 284 | m_subscribers.add(subscriber); |
| 285 | // notify the new "subscriber" of the current state of the world |
| 286 | subscriber->notifyGlobalMemoryChanged(m_array, m_length); |
| 287 | return truetrue; |
| 288 | } |
| 289 | return falsefalse; |
| 290 | } |
| 291 | |
| 292 | boolbool ByteArray::removeSubscriber(DomainEnv* subscriber) |
| 293 | { |
| 294 | for (uint32_t i = 0, n = m_subscribers.length(); i < n; ++i) |
| 295 | { |
| 296 | if (m_subscribers.get(i) == subscriber) |
| 297 | { |
| 298 | m_subscribers.removeAt(i); |
| 299 | return truetrue; |
| 300 | } |
| 301 | } |
| 302 | return falsefalse; |
| 303 | } |
| 304 | |
| 305 | #ifdef DEBUGGER |
| 306 | uint64_t ByteArray::bytesUsed() const |
| 307 | { |
| 308 | // If m_copyOnWrite is set, then we don't own the buffer, so the profiler |
| 309 | // should not attribute it to us. |
| 310 | return IsCopyOnWrite() ? 0 : m_capacity; |
| 311 | } |
| 312 | #endif |
| 313 | |
| 314 | void ByteArray::TellGcNewBufferMemory(const uint8_t* buf, uint32_t numberOfBytes) |
| 315 | { |
| 316 | if (buf && numberOfBytes > 0) |
| 317 | { |
| 318 | m_gc->SignalDependentAllocation(numberOfBytes); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | void ByteArray::TellGcDeleteBufferMemory(const uint8_t* buf, uint32_t numberOfBytes) |
| 323 | { |
| 324 | // Note that we can't rely on using m_toplevel->core()->GetGC(); |
| 325 | // order of destruction is unspecified, and if this is called at destruction |
| 326 | // time, Toplevel might have been destroyed before us. So keep a separate GC*. |
| 327 | if (buf && numberOfBytes > 0) |
| 328 | { |
| 329 | m_gc->SignalDependentDeallocation(numberOfBytes); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | void ByteArray::Compress(CompressionAlgorithm algorithm) |
| 334 | { |
| 335 | // Snarf the data and give ourself some empty data |
| 336 | // (remember, existing data might be copy-on-write so don't dance on it) |
| 337 | uint8_t* origData = m_array; |
| 338 | uint32_t origLen = m_length; |
| 339 | MMgc::GCObject* origCopyOnWriteOwner = m_copyOnWriteOwner; |
| 340 | if (!origLen) // empty buffer should give empty result |
| 341 | return; |
| 342 | |
| 343 | m_array = NULL__null; |
| 344 | m_length = 0; |
| 345 | m_capacity = 0; |
| 346 | m_position = 0; |
| 347 | m_copyOnWriteOwner = NULL__null; |
| 348 | |
| 349 | int error = Z_OK0; |
| 350 | |
| 351 | // Use zlib to compress the data. This next block is essentially the |
| 352 | // implementation of the compress2() method, but modified to pass a |
| 353 | // negative window value (-15) to deflateInit2() for k_deflate mode |
| 354 | // in order to obtain deflate-only compression (no ZLib headers). |
| 355 | |
| 356 | const int MAX_WINDOW_RAW_DEFLATE = -15; |
| 357 | const int DEFAULT_MEMORY_USE = 8; |
| 358 | |
| 359 | z_stream stream; |
| 360 | VMPI_memset::memset(&stream, 0, sizeof(stream)); |
| 361 | error = deflateInit2(&stream,deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)) |
| 362 | Z_BEST_COMPRESSION,deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)) |
| 363 | Z_DEFLATED,deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)) |
| 364 | algorithm == k_zlib ? MAX_WBITS : MAX_WINDOW_RAW_DEFLATE,deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)) |
| 365 | DEFAULT_MEMORY_USE,deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)) |
| 366 | Z_DEFAULT_STRATEGY)deflateInit2_((&stream),(9),(8),(algorithm == k_zlib ? 15 : MAX_WINDOW_RAW_DEFLATE),(DEFAULT_MEMORY_USE), (0), "1.2.3" , (int)sizeof(z_stream)); |
| 367 | AvmAssert(error == Z_OK)do { } while (0); |
| 368 | |
| 369 | uint32_t newCap = deflateBound(&stream, origLen); |
| 370 | EnsureCapacity(newCap); |
| 371 | |
| 372 | stream.next_in = origData; |
| 373 | stream.avail_in = origLen; |
| 374 | stream.next_out = m_array; |
| 375 | stream.avail_out = m_capacity; |
| 376 | |
| 377 | error = deflate(&stream, Z_FINISH4); |
Value stored to 'error' is never read | |
| 378 | AvmAssert(error == Z_STREAM_END)do { } while (0); |
| 379 | |
| 380 | m_length = stream.total_out; |
| 381 | AvmAssert(m_length <= m_capacity)do { } while (0); |
| 382 | |
| 383 | // Note that Compress() has always ended with position == length, |
| 384 | // but Uncompress() has always ended with position == 0. |
| 385 | // Weird, but we must maintain it. |
| 386 | m_position = m_length; |
| 387 | |
| 388 | deflateEnd(&stream); |
| 389 | |
| 390 | // Note: the Compress() method has never reported an error for corrupted data, |
| 391 | // so we won't start now. (Doing so would probably require a version check, |
| 392 | // to avoid breaking content that relies on misbehavior.) |
| 393 | if (origData && origData != m_array && origCopyOnWriteOwner == NULL__null) |
| 394 | { |
| 395 | TellGcDeleteBufferMemory(origData, origLen); |
| 396 | mmfx_delete_array(origData)::MMgcDestructTaggedArrayChecked(origData); |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | void ByteArray::Uncompress(CompressionAlgorithm algorithm) |
| 401 | { |
| 402 | // Snarf the data and give ourself some empty data |
| 403 | // (remember, existing data might be copy-on-write so don't dance on it) |
| 404 | uint8_t* origData = m_array; |
| 405 | uint32_t origCap = m_capacity; |
| 406 | uint32_t origLen = m_length; |
| 407 | uint32_t origPos = m_position; |
| 408 | MMgc::GCObject* origCopyOnWriteOwner = m_copyOnWriteOwner; |
| 409 | if (!origLen) // empty buffer should give empty result |
| 410 | return; |
| 411 | |
| 412 | m_array = NULL__null; |
| 413 | m_length = 0; |
| 414 | m_capacity = 0; |
| 415 | m_position = 0; |
| 416 | m_copyOnWriteOwner = NULL__null; |
| 417 | // we know that the uncompressed data will be at least as |
| 418 | // large as the compressed data, so let's start there, |
| 419 | // rather than at zero. |
| 420 | EnsureCapacity(origCap); |
| 421 | |
| 422 | const uint32_t kScratchSize = 8192; |
| 423 | uint8_t* scratch = mmfx_new_array(uint8_t, kScratchSize)::MMgcConstructTaggedArray((uint8_t*)__null, kScratchSize, MMgc ::kNone); |
| 424 | |
| 425 | int error = Z_OK0; |
| 426 | |
| 427 | z_stream stream; |
| 428 | VMPI_memset::memset(&stream, 0, sizeof(stream)); |
| 429 | error = inflateInit2(&stream, algorithm == k_zlib ? 15 : -15)inflateInit2_((&stream), (algorithm == k_zlib ? 15 : -15) , "1.2.3", (int)sizeof(z_stream)); |
| 430 | AvmAssert(error == Z_OK)do { } while (0); |
| 431 | |
| 432 | stream.next_in = origData; |
| 433 | stream.avail_in = origLen; |
| 434 | while (error == Z_OK0) |
| 435 | { |
| 436 | stream.next_out = scratch; |
| 437 | stream.avail_out = kScratchSize; |
| 438 | error = inflate(&stream, Z_NO_FLUSH0); |
| 439 | Write(scratch, kScratchSize - stream.avail_out); |
| 440 | } |
| 441 | |
| 442 | inflateEnd(&stream); |
| 443 | |
| 444 | mmfx_delete_array(scratch)::MMgcDestructTaggedArrayChecked(scratch); |
| 445 | |
| 446 | if (error == Z_STREAM_END1) |
| 447 | { |
| 448 | // everything is cool |
| 449 | if (origData && origData != m_array && origCopyOnWriteOwner == NULL__null) |
| 450 | { |
| 451 | TellGcDeleteBufferMemory(origData, origLen); |
| 452 | mmfx_delete_array(origData)::MMgcDestructTaggedArrayChecked(origData); |
| 453 | } |
| 454 | |
| 455 | // Note that Compress() has always ended with position == length, |
| 456 | // but Uncompress() has always ended with position == 0. |
| 457 | // Weird, but we must maintain it. |
| 458 | m_position = 0; |
| 459 | } |
| 460 | else |
| 461 | { |
| 462 | // When we error, put the original data back |
| 463 | m_array = origData; |
| 464 | m_length = origLen; |
| 465 | m_capacity = origCap; |
| 466 | m_position = origPos; |
| 467 | SetCopyOnWriteOwner(origCopyOnWriteOwner); |
| 468 | toplevel()->throwIOError(kCompressedDataError); |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | // |
| 473 | // ByteArrayObject |
| 474 | // |
| 475 | |
| 476 | ByteArrayObject::ByteArrayObject(VTable* ivtable, ScriptObject* delegate) |
| 477 | : ScriptObject(ivtable, delegate) |
| 478 | , m_byteArray(toplevel()) |
| 479 | { |
| 480 | c.set(&m_byteArray, sizeof(ByteArray)); |
| 481 | ByteArrayClass* cls = toplevel()->byteArrayClass(); |
| 482 | m_byteArray.SetObjectEncoding((ObjectEncoding)cls->get_defaultObjectEncoding()); |
| 483 | toplevel()->byteArrayCreated(this); |
| 484 | } |
| 485 | |
| 486 | Atom ByteArrayObject::getUintProperty(uint32_t i) const |
| 487 | { |
| 488 | if (i < m_byteArray.GetLength()) |
| 489 | { |
| 490 | intptr_t const b = m_byteArray[i]; |
| 491 | return atomFromIntptrValue(b); |
| 492 | } |
| 493 | else |
| 494 | { |
| 495 | return undefinedAtom; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | boolbool ByteArrayObject::hasUintProperty(uint32_t i) const |
| 500 | { |
| 501 | return i < m_byteArray.GetLength(); |
| 502 | } |
| 503 | |
| 504 | void ByteArrayObject::setUintProperty(uint32_t i, Atom value) |
| 505 | { |
| 506 | m_byteArray[i] = uint8_t(AvmCore::integer(value)); |
| 507 | } |
| 508 | |
| 509 | Atom ByteArrayObject::getAtomProperty(Atom name) const |
| 510 | { |
| 511 | uint32_t index; |
| 512 | if (AvmCore::getIndexFromAtom(name, &index)) |
| 513 | { |
| 514 | return getUintProperty(index); |
| 515 | } |
| 516 | |
| 517 | return ScriptObject::getAtomProperty(name); |
| 518 | } |
| 519 | |
| 520 | void ByteArrayObject::setAtomProperty(Atom name, Atom value) |
| 521 | { |
| 522 | uint32_t index; |
| 523 | if (AvmCore::getIndexFromAtom(name, &index)) |
| 524 | { |
| 525 | setUintProperty(index, value); |
| 526 | } |
| 527 | else |
| 528 | { |
| 529 | ScriptObject::setAtomProperty(name, value); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | boolbool ByteArrayObject::hasAtomProperty(Atom name) const |
| 534 | { |
| 535 | if (core()->currentBugCompatibility()->bugzilla558863) |
| 536 | { |
| 537 | uint32_t index; |
| 538 | if (AvmCore::getIndexFromAtom(name, &index)) |
| 539 | { |
| 540 | return index < m_byteArray.GetLength(); |
| 541 | } |
| 542 | |
| 543 | return ScriptObject::hasAtomProperty(name); |
| 544 | } |
| 545 | else |
| 546 | { |
| 547 | return ScriptObject::hasAtomProperty(name) |
| 548 | || getAtomProperty(name) != undefinedAtom; |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | Atom ByteArrayObject::getMultinameProperty(const Multiname* name) const |
| 553 | { |
| 554 | uint32_t index; |
| 555 | if (name->getName()->parseIndex(index)) |
| 556 | { |
| 557 | return getUintProperty(index); |
| 558 | } |
| 559 | |
| 560 | return ScriptObject::getMultinameProperty(name); |
| 561 | } |
| 562 | |
| 563 | void ByteArrayObject::setMultinameProperty(const Multiname* name, Atom value) |
| 564 | { |
| 565 | uint32_t index; |
| 566 | if (name->getName()->parseIndex(index)) |
| 567 | { |
| 568 | setUintProperty(index, value); |
| 569 | } |
| 570 | else |
| 571 | { |
| 572 | ScriptObject::setMultinameProperty(name, value); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | boolbool ByteArrayObject::hasMultinameProperty(const Multiname* name) const |
| 577 | { |
| 578 | uint32_t index; |
| 579 | if (name->getName()->parseIndex(index)) |
| 580 | { |
| 581 | return index < m_byteArray.GetLength(); |
| 582 | } |
| 583 | |
| 584 | return ScriptObject::hasMultinameProperty(name); |
| 585 | } |
| 586 | |
| 587 | String* ByteArrayObject::_toString() |
| 588 | { |
| 589 | uint32_t len = m_byteArray.GetLength(); |
| 590 | const uint8_t* c = m_byteArray.GetReadableBuffer(); |
| 591 | |
| 592 | Toplevel* toplevel = this->toplevel(); |
| 593 | AvmCore* core = toplevel->core(); |
| 594 | |
| 595 | if (len >= 3) |
| 596 | { |
| 597 | // UTF8 BOM |
| 598 | if ((c[0] == 0xef) && (c[1] == 0xbb) && (c[2] == 0xbf)) |
| 599 | { |
| 600 | return core->newStringUTF8((const char*)c + 3, len - 3); |
| 601 | } |
| 602 | else if ((c[0] == 0xfe) && (c[1] == 0xff)) |
| 603 | { |
| 604 | //UTF-16 big endian |
| 605 | c += 2; |
| 606 | len = (len - 2) >> 1; |
| 607 | return core->newStringEndianUTF16(/*littleEndian*/falsefalse, (const wchar*)c, len); |
| 608 | } |
| 609 | else if ((c[0] == 0xff) && (c[1] == 0xfe)) |
| 610 | { |
| 611 | //UTF-16 little endian |
| 612 | c += 2; |
| 613 | len = (len - 2) >> 1; |
| 614 | return core->newStringEndianUTF16(/*littleEndian*/truetrue, (const wchar*)c, len); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | String* result = toplevel->tryFromSystemCodepage(c); |
| 619 | if (result != NULL__null) |
| 620 | return result; |
| 621 | |
| 622 | // Use newStringUTF8() with "strict" explicitly set to false to mimick old, |
| 623 | // buggy behavior, where malformed UTF-8 sequences are stored as single characters. |
| 624 | return core->newStringUTF8((const char*)c, len, falsefalse); |
| 625 | } |
| 626 | |
| 627 | Atom ByteArrayObject::readObject() |
| 628 | { |
| 629 | return m_byteArray.ReadObject(); |
| 630 | } |
| 631 | |
| 632 | void ByteArrayObject::writeObject(Atom value) |
| 633 | { |
| 634 | m_byteArray.WriteObject(value); |
| 635 | } |
| 636 | |
| 637 | int ByteArrayObject::readByte() |
| 638 | { |
| 639 | return (int8_t)m_byteArray.ReadU8(); |
| 640 | } |
| 641 | |
| 642 | int ByteArrayObject::readUnsignedByte() |
| 643 | { |
| 644 | return m_byteArray.ReadU8(); |
| 645 | } |
| 646 | |
| 647 | int ByteArrayObject::readShort() |
| 648 | { |
| 649 | return (int16_t)m_byteArray.ReadU16(); |
| 650 | } |
| 651 | |
| 652 | int ByteArrayObject::readUnsignedShort() |
| 653 | { |
| 654 | return m_byteArray.ReadU16(); |
| 655 | } |
| 656 | |
| 657 | int ByteArrayObject::readInt() |
| 658 | { |
| 659 | return (int32_t)m_byteArray.ReadU32(); |
| 660 | } |
| 661 | |
| 662 | uint32_t ByteArrayObject::readUnsignedInt() |
| 663 | { |
| 664 | return m_byteArray.ReadU32(); |
| 665 | } |
| 666 | |
| 667 | double ByteArrayObject::readFloat() |
| 668 | { |
| 669 | return m_byteArray.ReadFloat(); |
| 670 | } |
| 671 | |
| 672 | double ByteArrayObject::readDouble() |
| 673 | { |
| 674 | return m_byteArray.ReadDouble(); |
| 675 | } |
| 676 | |
| 677 | boolbool ByteArrayObject::readBoolean() |
| 678 | { |
| 679 | return m_byteArray.ReadBoolean(); |
| 680 | } |
| 681 | |
| 682 | void ByteArrayObject::writeBoolean(boolbool value) |
| 683 | { |
| 684 | m_byteArray.WriteBoolean(value); |
| 685 | } |
| 686 | |
| 687 | void ByteArrayObject::writeByte(int value) |
| 688 | { |
| 689 | m_byteArray.WriteU8((uint8_t)value); |
| 690 | } |
| 691 | |
| 692 | void ByteArrayObject::writeShort(int value) |
| 693 | { |
| 694 | m_byteArray.WriteU16((uint16_t)value); |
| 695 | } |
| 696 | |
| 697 | void ByteArrayObject::writeInt(int value) |
| 698 | { |
| 699 | m_byteArray.WriteU32((uint32_t)value); |
| 700 | } |
| 701 | |
| 702 | void ByteArrayObject::writeUnsignedInt(uint32_t value) |
| 703 | { |
| 704 | m_byteArray.WriteU32(value); |
| 705 | } |
| 706 | |
| 707 | void ByteArrayObject::writeFloat(double value) |
| 708 | { |
| 709 | m_byteArray.WriteFloat((float)value); |
| 710 | } |
| 711 | |
| 712 | void ByteArrayObject::writeDouble(double value) |
| 713 | { |
| 714 | m_byteArray.WriteDouble(value); |
| 715 | } |
| 716 | |
| 717 | ByteArray::CompressionAlgorithm ByteArrayObject::algorithmToEnum(String* algorithm) |
| 718 | { |
| 719 | Toplevel* toplevel = this->toplevel(); |
| 720 | toplevel->checkNull(algorithm, "algorithm"); |
| 721 | if (algorithm->equalsLatin1("zlib")) |
| 722 | { |
| 723 | return ByteArray::k_zlib; |
| 724 | } |
| 725 | if (algorithm->equalsLatin1("deflate")) |
| 726 | { |
| 727 | return ByteArray::k_deflate; |
| 728 | } |
| 729 | else |
| 730 | { |
| 731 | // Unknown format |
| 732 | toplevel->throwIOError(kCompressedDataError); |
| 733 | return ByteArray::k_zlib; // not reached, pacify compiler |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | void ByteArrayObject::_compress(String* algorithm) |
| 738 | { |
| 739 | m_byteArray.Compress(algorithmToEnum(algorithm)); |
| 740 | } |
| 741 | |
| 742 | void ByteArrayObject::_uncompress(String* algorithm) |
| 743 | { |
| 744 | m_byteArray.Uncompress(algorithmToEnum(algorithm)); |
| 745 | } |
| 746 | |
| 747 | void ByteArrayObject::writeBytes(ByteArrayObject *bytes, |
| 748 | uint32_t offset, |
| 749 | uint32_t length) |
| 750 | { |
| 751 | toplevel()->checkNull(bytes, "bytes"); |
| 752 | |
| 753 | if (length == 0) { |
| 754 | length = bytes->get_length() - offset; |
| 755 | } |
| 756 | |
| 757 | m_byteArray.WriteByteArray(bytes->GetByteArray(), |
| 758 | offset, |
| 759 | length); |
| 760 | } |
| 761 | |
| 762 | void ByteArrayObject::readBytes(ByteArrayObject *bytes, |
| 763 | uint32_t offset, |
| 764 | uint32_t length) |
| 765 | { |
| 766 | toplevel()->checkNull(bytes, "bytes"); |
| 767 | |
| 768 | if (length == 0) { |
| 769 | length = m_byteArray.Available(); |
| 770 | } |
| 771 | |
| 772 | m_byteArray.ReadByteArray(bytes->GetByteArray(), |
| 773 | offset, |
| 774 | length); |
| 775 | } |
| 776 | |
| 777 | String* ByteArrayObject::readMultiByte(uint32_t length, String* charSet) |
| 778 | { |
| 779 | toplevel()->checkNull(charSet, "charSet"); |
| 780 | return m_byteArray.ReadMultiByte(length, charSet); |
| 781 | } |
| 782 | |
| 783 | String* ByteArrayObject::readUTF() |
| 784 | { |
| 785 | return m_byteArray.ReadUTF(); |
| 786 | } |
| 787 | |
| 788 | String* ByteArrayObject::readUTFBytes(uint32_t length) |
| 789 | { |
| 790 | return m_byteArray.ReadUTFBytes(length); |
| 791 | } |
| 792 | |
| 793 | void ByteArrayObject::writeMultiByte(String* value, String* charSet) |
| 794 | { |
| 795 | toplevel()->checkNull(value, "value"); |
| 796 | toplevel()->checkNull(charSet, "charSet"); |
| 797 | m_byteArray.WriteMultiByte(value, charSet); |
| 798 | } |
| 799 | |
| 800 | void ByteArrayObject::writeUTF(String* value) |
| 801 | { |
| 802 | toplevel()->checkNull(value, "value"); |
| 803 | m_byteArray.WriteUTF(value); |
| 804 | } |
| 805 | |
| 806 | void ByteArrayObject::writeUTFBytes(String* value) |
| 807 | { |
| 808 | toplevel()->checkNull(value, "value"); |
| 809 | m_byteArray.WriteUTFBytes(value); |
| 810 | } |
| 811 | |
| 812 | uint32_t ByteArrayObject::get_objectEncoding() |
| 813 | { |
| 814 | return m_byteArray.GetObjectEncoding(); |
| 815 | } |
| 816 | |
| 817 | void ByteArrayObject::set_objectEncoding(uint32_t objectEncoding) |
| 818 | { |
| 819 | if ((objectEncoding == kAMF3)||(objectEncoding == kAMF0)) |
| 820 | { |
| 821 | m_byteArray.SetObjectEncoding(ObjectEncoding(objectEncoding)); |
| 822 | } |
| 823 | else |
| 824 | { |
| 825 | toplevel()->throwArgumentError(kInvalidEnumError, "objectEncoding"); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | Stringp ByteArrayObject::get_endian() |
| 830 | { |
| 831 | return (m_byteArray.GetEndian() == kBigEndian) ? core()->kbigEndian : core()->klittleEndian; |
| 832 | } |
| 833 | |
| 834 | void ByteArrayObject::set_endian(Stringp type) |
| 835 | { |
| 836 | Toplevel* toplevel = this->toplevel(); |
| 837 | AvmCore* core = toplevel->core(); |
| 838 | |
| 839 | toplevel->checkNull(type, "endian"); |
| 840 | |
| 841 | type = core->internString(type); |
| 842 | if (type == core->kbigEndian) |
| 843 | { |
| 844 | m_byteArray.SetEndian(kBigEndian); |
| 845 | } |
| 846 | else if (type == core->klittleEndian) |
| 847 | { |
| 848 | m_byteArray.SetEndian(kLittleEndian); |
| 849 | } |
| 850 | else |
| 851 | { |
| 852 | toplevel->throwArgumentError(kInvalidEnumError, "type"); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | void ByteArrayObject::clear() |
| 857 | { |
| 858 | m_byteArray.Clear(); |
| 859 | m_byteArray.SetPosition(0); |
| 860 | } |
| 861 | |
| 862 | #ifdef DEBUGGER |
| 863 | uint64_t ByteArrayObject::bytesUsed() const |
| 864 | { |
| 865 | uint64_t size = ScriptObject::bytesUsed(); |
| 866 | size += m_byteArray.bytesUsed(); |
| 867 | return size; |
| 868 | } |
| 869 | #endif |
| 870 | |
| 871 | // |
| 872 | // ByteArrayClass |
| 873 | // |
| 874 | |
| 875 | ByteArrayClass::ByteArrayClass(VTable *vtable) |
| 876 | : ClassClosure(vtable) |
| 877 | { |
| 878 | setPrototypePtr(toplevel()->objectClass->construct()); |
| 879 | set_defaultObjectEncoding(kEncodeDefault); |
| 880 | } |
| 881 | |
| 882 | GCRef<ByteArrayObject> ByteArrayClass::constructByteArray() |
| 883 | { |
| 884 | return constructObject(); |
| 885 | } |
| 886 | } |
| 887 |